1. Laboratory of Bacteriology; Instituto Butantan; São Paulo, Brazil
2. Proxima Concepts Ltd; London, UK
3. Laboratory of Immunochemistry; Instituto Butantan; São Paulo, Brazil
4. Department of Cellular and Molecular Medicine; Bristol University; Bristol, UK
5. Laboratory of Virology; Instituto Butantan; São Paulo, Brazil
6. Laboratory of Biochemistry; Instituto Butantan; São Paulo, Brazil
7. Institute of Biophysics Carlos Chagas; UFRJ; Rio de Janeiro, Brazil